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Idioms and Phrases with sit by

sit by

Also, sit idly by. Refrain from interfering, remain passive, as in I can't just sit by and let her get in trouble.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.